While the role of classical production factors in the developed economies is diminishing, the fourth production factor - knowledge cumulated in the form of human capital comes to play. Human capital, like the physical one, undergoes development and depreciation processes - therefore, continuous investing in human capital is necessary. On the job training is one of the kinds of investments. Contemporary human capital models point out that, regardless of the type of training (general or specific), the benefits of training are shared by employer as well as employee. Thus, the cost of training should also be shared.